Hi!
Been reading the forum for a while but not had much to say, wish I had realised that these restrictions existed as I would have registered earlier!
Not that I think anyone will see this post, but, there's a post in Hardware (
https://bitcointalk.org/index.php?topic=121109), could someone tell him that fan sensors go all the time, usually the device will either shutdown, or as it seems in his case, spin up to 100% for protection. The fan sensor runs down the additional wire used to connect the fan!